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The property of a substance to absorb moisture from the air on exposure is called

  • A.Osmosis
  • B.Deliquescence
  • C.Efflorescence
  • D.Desiccation

Answer: B

Deliquescence is the property of absorbing so much moisture from the air that the substance dissolves in it, forming a solution.

Calcium chloride and sodium hydroxide are deliquescent. The opposite is efflorescence, where a hydrated crystal loses its water to the air and crumbles to powder.

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